We planted some laurels two years ago (in the wet summer of 2012). We watered them regularly and they all did very well. Over the past couple of months a couple of trees have lost leaves and are now bare branches. The other trees continue to look ok. There are approx. 12 trees in all, approx. 5ft high. Could this be due to this summer's dry weather and the dry autumn? (we live in Norfolk-with low rainfall), we thought they were well established, or could another reason be the cause? Any help would be appreciated. I can post photos if needed. One tree is very brittle, but the other one has a bit of green lower down. They are next to an established hazel, which does have a couple of dead branches.
Any advice would be appreciated.